When a pattern emerges in criminal investigations, it often becomes the strongest lead.In Southern California, that pattern pointed to a serial sexual offender who used a knife to control his victims and left DNA behind at multiple scenes. For years, the DNA sat unmatched. Today’s episode examines the San Diego Knifepoint Rapist case, the forensic…

The Wrongful Conviction of Marvin Grimm Jr. In 1975, a three-year-old boy disappeared in Richmond, Virginia. Four days later, his body was found in the James River — and the case immediately drew intense public attention. With few leads and enormous pressure to solve the crime, investigators focused on a 20-year-old neighbor: Marvin Grimm Jr….

Robert Eugene Brashers: The Serial Killer Forensic Science Finally Exposed For decades, Robert Eugene Brashers lived in obscurity. His name didn’t appear in headlines. He wasn’t the subject of nationwide manhunts. And for years, law enforcement agencies investigating violent crimes across multiple states had no idea they were all searching for the same person. That…